Respiratory gas humidifier



FIG. 1 is a front view of the invention in an application environment;

FIG. 2 is a perspective view of the invention;

FIG. 3 is a front view of the invention, the rear view being a mirror image thereof;

FIG. 4 is a side elevational view of the invention; and,

FIG. 5 is a side elevational view of the side opposite to that illustrated in FIG. 4.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a respiratory gas humidifier, as shown and described. 